Manufactured from premium ARP 8740 chromoly steel and heat-treated to exacting standards, each stud features a 1/2-13 base thread and a 7/16-20 top thread for secure rocker arm retention. The ARP 290-7201 Pro Series rocker arm stud kit is engineered for high-performance Pontiac V8 engine applications, providing significantly greater strength and clamping stability than factory studs.
